ICF COACHES - Draw & Buffing Gear

 Draw & Buffing Gear

Draw Gear: 

It is a vital component of rolling stock, which is utilized to connect one rolling stock to the adjacent rolling stock to form a train & also to transmit draft forces from engine to last vehicle. It is provided in the centre of the body in the under frame head stock at both the ends. Mainly two types of draft gear are being utilized in Indian Railways. 

ICF COACHES - Coach Maintenance History Card

 Coach Maintenance History Card

Every coaching depot shall have computers for maintaining the coach maintenance history in software programmed which should be compatiblewith the programmed of the coaching workshop.

The “Coach Maintenance History Card” (MHC) for each of its coaches. The card will contain records of maintenance schedules including POH and special repairs in shops. It will also show the history of the coach from the time the coach is placed in service will its condemnation and will give details of all major repairs wheel changing bogie changing etc.

ICF COACHES - CORROSION AND ITS PREVENTION

 CORROSION AND ITS PREVENTION 

Introduction: When metals are put into use in various forms they are exposed to environment containing liquids, gases etc. As a result of this the surface of metal starts deteriorating. This type of deterioration or destruction may be direct chemical attack or electrochemical attack.

ICF COACHES - RIDING INDEX

RIDING INDEX 

The assumptions for the formulation of certain standards of assessing comfort is purely from the point of view of vehicle oscillations transmitted to passengers only. The human sensation of comfort is dependent on displacement, acceleration and rate of change of acceleration. Basically, these indices are function of the amplitude of vibration and frequency of vibration. In other words, the product of these values could be used as measure of comfort/discomfort.

IOH/POH periodicity of ICF coaches

IOH/POH periodicity of ICF coaches: 

(Rly Bd letter No.2007/M(C)/141/1 Dated: 26.09.2008 & 06.08.2009) 

D.O.No.2007/M/(C)/141/1 dated: 12.02.2009 by MM to all CMEs

ICF COACHES - NMG COACHES

NMG COACHES 

The coaches with age of 20 – 21 years or later are being converted during POH for the purpose to carry Automobile (Express). These coaches are known as NMG coaches and the rakes formed with these coaches are called NMG rakes. 

Following are the features: 

• Load carrying capacity is 12 ton maximum. 
• Speed 75 kmph & 100 kmph Max. 
• The life of such converted coach is 30 years from the date of original manufacture. 
• Wider end opening of 2800 mm × 2200 mm. 
• Improved adjustable internal locking and lashing arrangement to avoid damage to the vehicle during transit. 
• The periodicity of POH is 24 months. 

Maintenance Pattern for NMG rakes 

(As per Rly. Bd's Letter No. 91/M (C)/650/1 dated 29.5.2000) 

In order to optimize utilization of NMG rakes it has been decided to introduce the following maintenance pattern:

NMG rakes may be run on goods pattern with intensive examination at both the ends, following other conditions for enroute detention in case at stabling at road side stations. In case of close circuit runs up to3500 km, the rake may be run on round trip basis. Close circuit rake must be clearly identified and should have a nominated base depot where adequate trained staff and spares should be available. Each NMG coach should be marked with the nominated POH workshop and return date. The maintenance 73 schedules of the NMG coaches will continue to be on the coaching pattern to be carried out by the base depot. Using these coaches as parcel vans for running on piecemeal basis on passenger carrying trains is strictly prohibited. Each coach should be stencilled at a suitable place on its end panel, the code of the base depot and a schedule chart. The date and station code of the depot where a particular schedule is carried out should be stencilled at the appropriate place in the schedule chart immediately when the schedule is completed. 

Also See

C & W (Carriage & Wagon) 
Study Material & Question Bank

ICF COACHES - SAFETY & AMENITY FITTINGS

SAFETY & AMENITY FITTINGS 

The fittings which are fitted in the coach for safety of passengers & their luggage are called as “Safety Fittings“. The fittings which are provided inside the coach for comfort, Luxury and also for non-strenuous journey of the passengers are called as “Amenity Fittings“. 

Following are some of the Safety fittings provided in the coaches: 

Alarm pull chain, Internal latches on top & bottom on body side doors, Provision of pad locking arrangement from outside of body side door, Internal latch and tower bolt for compartment doors in first class, Vestibule doors/shutters with locking arrangement, Latches for window shutters, Fire extinguishers, Safety bars on all window openings, Window shutters both glass and louver, Sealed window glass for AC coaches, Frosted glass shutters for toilets. 

ICF Coach - WASHING AND CLEANING OF COACHES:

 WASHING AND CLEANING OF COACHES: 

Wherever washable aprons are available on the platforms, the time available before the terminating trains are pulled out from platform and backed to the pit line/yard, should be utilized for inside sweeping and toilet cleaning.

External Cleaning / Washing 

• Place the rake/coaches on the washing pit provided with equipment's required for washing and cleaning. It should be ensured that the rake/coach is protected with proper board/signal for safety of the staff working and to prevent 59 movement/disturbance in the activity. Scotch blocks with locking arrangement should be used to protect lines and keys should be kept with SSE(C&W) till the time rake is under maintenance. 

ICF COACHES - EXAMINATION OF TRAINS

EXAMINATION OF TRAINS 

Ref: IRCA Rule Book Part – IV (Ch. 3) 

 Rolling In Examination: There are certain types of defects in rolling stock which can only be detected during the motion of train. To detect such type of defects, rolling in examination is adopted. This examination is carried out on all pass through trains and terminating trains. To carry out Rolling in examination, C & W staff and supervisor will take position on both sides of platform / line in which train is being received. 

ICF COACHES - Trip Schedule

Trip Schedule: 

Trip schedule attention is given after completion of every trip. It has to be attended both by primary and secondary depots. The coach need not be detached from the rake during trip schedule attention. 

Following items are given attention during the trip schedule: 

Maintenance of ICF Coaches

 2.5 Maintenance 

Coaching Maintenance Depots. 

According to number of based coaches (holding Capacity), depot is classified into three categories. 

Sr. No                            Depot                                            Number of based coaches 

1                                    Minor                                                   50 to 100 

2                                    Medium                                                100 to 250 

3                                Major Above                                                 250

Standard Facilities: 

1. Pit line for examination and repairs of coaches 

2. Sick line with covered accommodation 

3. Office & store facilities 

4. Machinery & plants 

5. Covered Accommodation: 

ICF Bogie

Main Components of ICF Bogie 

UNDERFRAME:- 

i) Sole bar 

ii) Head stock 

iii) Transom 

iv) Longitudinal bar 

Salient Features of ICF Coach Shell / Body

Salient Features of ICF Coach Shell / Body 

All Metal: - ICF coach shell is made up of steel channel frames of thin sections except the seats & luggage racks which are made up of wooden members. 

Light Weight:-The weight of coach shell is reduced due to minimal use of wooden members, use of anti-corrosive Corten Steel (IRSM 41) of thickness 1.6 mm for roof and 2 mm thickness for corrugated floor, side panel and end panels during fabrication of coach body. The use of gusset plate, knee & rivets are also avoided in under frame. Hence weight of ICF shell is reduced by 26% to 32% compared to IRS coach shell which was used in the past. 

ICF COACHES - Introduction

ICF COACHES 

Introduction 

An attempt for standardization of manufacturing of passenger coaches led to development of IRS design of steel body coaches. In 1954 Steel body coach design was taken from M/S Schlieren Switzerland for manufacturing of ICF Coaches at Perambur.